Solid soap

Abstract

The object of the present invention is to improve the solidification point and the hardness of a soap of the fatty acid soap series wherein the percentage of potassium used as the counter ion is large. The solid soap of the present invention to achieve the above-described object is characterized by comprising 1 to 5 mass % of a betaine, and in that sodium and potassium are contained as the fatty acid counter ion, and potassium is 20 mole % or more of the counter ion.

What is claimed is: 
     
       1. A solid soap comprising:
 1 to 5 mass % of trimethylglycine, 
 wherein sodium and potassium are contained as a fatty acid counter ion, and 
 wherein potassium is 20 mole % or more of the counter ion. 
 
     
     
       2. The solid soap according to  claim 1 ,
 wherein a mole ratio of sodium/potassium is from 80/20 to 50/50. 
 
     
     
       3. The solid soap according to  claim 1 , comprising:
 20 to 70 mass % of a fatty acid soap part, and 
 30 to 70 mass % of a sugar and polyol part, 
 
       wherein no ethanol is contained. 
     
     
       4. The solid soap according to  claim 3 , wherein the solid soap is transparent. 
     
     
       5. The solid soap according to  claim 2 , comprising:
 20 to 70 mass % of a fatty acid soap part, and 
 30 to 70 mass % of a sugar and polyol part, 
 
       wherein no ethanol is contained. 
     
     
       6. The solid soap according to  claim 5 , wherein the solid soap is transparent.